Yes AFAIK some portion of that revenue is returned to Fritzing to support ongoing development (along with the funds from the paywall.) Support from Aisler is also the reason that development restarted. That said, there is a post in the forums (without many details nor working code that I am aware of) by someone that got JLC (I think!) to work with Fritzing. The major pain was likely the pnp file and I think he hand modified the version to do what he needed. I expect a search of the forums may turn up that post although I don’t know what keywords would work (perhaps pick and place?)
edit this is likely the post I was thinking of (found by a search for pick and place):
Peter